The right answer is B.
The answer B is the only proposition which specified at which stage the event must occur, in fact, the meiosis.
Meiosis is a characteristic division of reproductive cells that can generate gametes to form new species (desendence). So if a mutation occurs at this time (such as recombinations) it will inevitably be inherited.
The tree topology
The lengths of the branches
The branching order of the tree
Nucleotide substitution rate
These would not affect maximum likelihood estimates of phylogenies when comparing different tree hypotheses.
<h3>What is tree topology?</h3>
- A unique kind of structure called a tree topology has numerous connected parts arranged like the branches of a tree.
<h3>The lengths of the branches:</h3>
- Branch lengths are a sign of genetic divergence; the longer the branch, the more genetic divergence has taken place.
- Usually, we calculate the average number of nucleotide or protein substitutions per site to assess the degree of genetic alteration.
<h3>The branching order of the tree:</h3>
- The topology of a tree refers to its branching structure.
- Species (or higher taxa), populations, genes, and proteins are examples of taxonomic units that the nodes represent.
- A branch is referred to as an edge, and it represents an estimate of the length of time between the evolutionary relationships between taxonomic units.
<h3>What is nucleotide substitution rate?</h3>
- The instantaneous rate of change from each of the four nucleotides to each of the other four nucleotides is summarized in the nucleotide substitution rate matrix.
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Yes, it does, but not the way people think. it doesn't gain it from the weight of all the people. the earth takes mass from elsewhere, as our population continues to grow.
Hi!
The correct option would be A. There's lower biodiversity among birds
Biodiversity refers to the variety of organisms (species) that inhabit a particular place, such as in our case different species of birds.
From the graph we can see that over time, the bird species are declining. From roughly 1700 bird species, the number has fallen to about 200 bird species by the middle of the fourth year.
Hence, we can deduce, and it would be accurate to say, that there is a relatively lower biodiversity amongst the birds with regard to that in the beginning.
Option B is incorrect because if the birds had a higher reproductive rate, they would be able to make up for the loss of bird species from the habitat. From the graph, we can assume that there's a moderately low reproductive rate among the birds.
Option C is incorrect because we do not know the affect of this pollution on the producers (photosynthesizing plant lifeforms). It may be possible that they might be declining, but we cannot conclude that solely from the graph.
Hope this helps!
